18″ / 457 mm
Nominal diameter
18 Hz
Resonance
0.57
Q factor
89 dB
Sensitivity
± 18 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.4
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
18.4
Hz
Mechanical quality factor
QMS
5.70
Electrical quality factor
QES
0.63
Total quality factor
QTS
0.57
Large signal parameters
Maximum linear excursion
xmax
18.0
mm
Maximum excursion before damage
xlim
25.0
mm
Air volume displaced at xmax
VD
2192
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.8
Ω
Inductance (1kHz)
LE
0.41
mH
Magnet
Force factor
Bl
11.31
N/A
Motor constant
Bl/√RE
6.76
N/√W
Diaphragm
Effective diameter
394
mm
Effective area
SD
1218
cm²
Moving mass
MMS
250
g
Moving mass (without air load)
MMD
220.7
g
Suspensions
Stiffness
KMS
3.33
N/mm
Compliance
CMS
300
µm/N
Equivalent volume to the compliance
VAS
632
L
Mechanical resistance
RMS
5.03
N·s/m
Dimensions
Nominal diameter
18
″
457
mm
Volume occupied by the driver (estimated)
6.9
L
Export this driver to a simulation software:
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SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to Acoustic Elegance IB18HT-4
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18″Subwoofer
fS
18 Hz
SD
1218 cm²
QTS
0.57
xmax
18.0 mm
SPL1W
90 dB
Bl/√RE
6.76
Pmax
1000 W
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15″Subwoofer
fS
20 Hz
SD
830 cm²
QTS
0.62
xmax
18.0 mm
SPL1W
88 dB
Bl/√RE
5.33
Pmax
1000 W
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15″Subwoofer
fS
20 Hz
SD
830 cm²
QTS
0.62
xmax
18.0 mm
SPL1W
89 dB
Bl/√RE
5.33
Pmax
1000 W